Sumar valores de fila con intervalos

Categoría

Cada celda de la fila 1 contiene números del 1 al 256 que se suman a intervalos en una celda de criterios

[KClientError] [REQ_ERR: OPERATION_TIMEDOUT] [KTrafficClient] Something is wrong.

Otras funciones de la categoría

Contar y sumar valores segun dos criterios [KClientError] [REQ_ERR: OPERATION_TIMEDOUT] [KTrafficClient] Something is wrong.
Sumar y contar elementos de una matriz por dos criterios [KClientError] [REQ_ERR: OPERATION_TIMEDOUT] [KTrafficClient] Something is wrong.
Formula matricial para sumar con fecha inicio y final [KClientError] [REQ_ERR: OPERATION_TIMEDOUT] [KTrafficClient] Something is wrong.
Contar días de cada mes entre fechas inicial y final [KClientError] [REQ_ERR: OPERATION_TIMEDOUT] [KTrafficClient] Something is wrong.
Determinar un valor basado a dos criterios [KClientError] [REQ_ERR: OPERATION_TIMEDOUT] [KTrafficClient] Something is wrong.
Suma basada sobre dos criterios [KClientError] [REQ_ERR: OPERATION_TIMEDOUT] [KTrafficClient] Something is wrong.
Suma de elementos basado a dos criterios [KClientError] [REQ_ERR: OPERATION_TIMEDOUT] [KTrafficClient] Something is wrong.
Formato condicional con formulas [KClientError] [REQ_ERR: OPERATION_TIMEDOUT] [KTrafficClient] Something is wrong.
Calcular costos por mes, el Departamento y categorias [KClientError] [REQ_ERR: OPERATION_TIMEDOUT] [KTrafficClient] Something is wrong.
Contar datos entre un valor inicial y final [KClientError] [REQ_ERR: OPERATION_TIMEDOUT] [KTrafficClient] Something is wrong.