38326
domain: N
Appears in sequences
- a(1) = 5; a(n+1) = a(n)-th nonprime, where nonprimes begin at 1.at n=44A025005
- a(n) = 1 + (26*n+17+7*n^2)*n/2.at n=21A095796
- Number of (n+4) X 8 0..1 matrices with each 5 X 5 subblock idempotent.at n=16A224686
- Number of binary squares of length 2n that neither begin nor end with a shorter square.at n=18A323443
- E.g.f. satisfies A(x) = (1+x)^2 * exp( x * (1+x) * A(x) ).at n=5A378017