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

Author

Reinhard Zumkeller, Sep 16 2014

Keywords

• nonn

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

Crossrefs

Cf. A024431, A115409.

Programs

Haskell

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