Triangle A054521 * A157019, where A054521 = an infinite lower triangular matrix and A157019 = a vector [1, 2, 2, 4, 2, 8, 2, 10, 8, ...].

A157031

Triangle A054521 * A157019, where A054521 = an infinite lower triangular matrix and A157019 = a vector [1, 2, 2, 4, 2, 8, 2, 10, 8, ...].

Terms

    a(0) =1a(1) =1a(2) =3a(3) =3a(4) =9a(5) =3a(6) =19a(7) =7a(8) =21a(9) =13a(10) =51a(11) =7a(12) =87a(13) =17a(14) =39a(15) =51a(16) =175a(17) =11a(18) =239a(19) =21a(20) =169a(21) =111a(22) =415a(23) =15a(24) =489a(25) =185a(26) =313a(27) =219a(28) =1017a(29) =15

External references