65781

Appears in sequences

• Sieve performed by successive iterations of steps where step m is: keep m terms, remove the next 3 and repeat; as m = 1,2,3,.. the remaining terms form this sequence.at n=26A112561
• G.f. A(x) = Sum_{n=-oo..+oo} x^n * (1 + x^n)^(2*n).at n=70A260147
• a(n) = binomial(n + 4, n - 1) + 1.at n=22A323228