A369059 - OEIS

A369059

a(0) = 0, and for n > 0, a(n) is the square of the product of first n-1 odd primes.

0, 1, 9, 225, 11025, 1334025, 225450225, 65155115025, 23520996524025, 12442607161209225, 10464232622576958225, 10056127550296456854225, 13766838616355849433434025, 23142055714094182897602596025, 42789661015360144177667200050225, 94522361182930558488466844910947025, 265513312562851938794103367354850193225

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OFFSET

0,3

COMMENTS

Terms a(2) .. a(9) are equal to the terms A360435(1..8).

LINKS

Table of n, a(n) for n=0..16.

Index entries for sequences related to primorial numbers

FORMULA

a(n) = A002620(A002110(n)).

For n > 0, a(n) = A061742(n)/4 = A070826(n)^2.

For n > 0, a(n) >= A368704(n) and for n > 1, a(n) >= A360435(n-1).