A171620 a(n) = A120627(n) + A120627(n+1).

2, 8, 12, 12, 30, 30, 18, 30, 30, 18, 36, 36, 24, 24, 24, 30, 18, 12, 24, 72, 78, 48, 36, 18, 12, 30, 54, 72, 60, 30, 30, 48, 42, 36, 30, 42, 54, 24, 60, 138, 114, 66, 54, 48, 42, 42, 84, 60, 48, 60, 30, 48, 42, 12, 54, 60, 18, 36, 66, 60, 78, 84, 66, 54, 54, 54, 48, 36, 30, 72

Offset

1,1

Links

Table of n, a(n) for n=1..70.

Crossrefs

Cf. A120627.

Sequence in context: A178060 A007543 A352549 * A043377 A107629 A080058

Adjacent sequences: A171617 A171618 A171619 * A171621 A171622 A171623

Keyword

nonn

Author

Giovanni Teofilatto, Dec 13 2009

Extensions

Missing values inserted by R. J. Mathar, Jun 28 2010

Status

approved