A121338 - cp's OEIS frontend

A121338 Pentagonal numbers P(k) that are one-third of other pentagonal numbers: P(k) such that 3*P(k)=P(m) for some m>k.

n	a(n)
1	70
2	511258935
3	3732600255368600
4	27250975409595074561065
5	198953975772318806945317308330
6	1452523584226469439408576900215922395
7	10604587088767577582197244731443261336155260
8	77421990626847055423676582260371016672624778798925

[70, 511258935, 3732600255368600, 27250975409595074561065, 198953975772318806945317308330, 1452523584226469439408576900215922395, 10604587088767577582197244731443261336155260, 77421990626847055423676582260371016672624778798925]

cp's OEIS Frontend

A121338 Pentagonal numbers P(k) that are one-third of other pentagonal numbers: P(k) such that 3*P(k)=P(m) for some m>k.

Table of values

List of values