A247414 First differences of A024431.

1, 4, 2, 10, 3, 23, 8, 54, 9, 117, 11, 245, 14, 504, 18, 1026, 21, 2073, 22, 4168, 24, 8360, 25, 16745, 27, 33517, 28, 67062, 29, 134153, 30, 268336, 32, 536704, 33, 1073441, 35, 2146917, 37, 4293871, 39, 8587781, 40, 17175602, 41, 34351245, 45, 68702535, 47

Offset

0,2

Comments

a(n) = A024431(n+1) - A024431(n) = A115409(n+1,n+1).

Links

Reinhard Zumkeller, Table of n, a(n) for n = 0..1000

Prog

(Haskell)
a247414 n = a247414_list !! n
a247414_list = zipWith (-) (tail a024431_list) a024431_list

Crossrefs

Cf. A024431, A115409.

Sequence in context: A130273 A016516 A349693 * A138569 A191725 A198326

Adjacent sequences: A247411 A247412 A247413 * A247415 A247416 A247417

Keyword

nonn

Author

Reinhard Zumkeller, Sep 16 2014

Status

approved