A087189 - cp's OEIS frontend

A087189 (P(p)-1)/2/p^2 where p runs through the odd primes different from 5 and P(k) is the k-th central pentanomial coefficient (A005191).

n	a(n)
1	1
2	83
3	16907
4	279021
5	89444018
6	1695011087
7	658067703933
8	5768410509553937
9	122108313460051500
10	1226978854222034501448
11	593538703869555995238872
12	13175226571428140572866093
13	6594852118968926152838341468
14	76339779380132942579800334346403

[1, 83, 16907, 279021, 89444018, 1695011087, 658067703933, 5768410509553937, 122108313460051500, 1226978854222034501448, 593538703869555995238872, 13175226571428140572866093, 6594852118968926152838341468, 76339779380132942579800334346403]

cp's OEIS Frontend

A087189 (P(p)-1)/2/p^2 where p runs through the odd primes different from 5 and P(k) is the k-th central pentanomial coefficient (A005191).

Table of values

List of values