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A048494 Array T(k,n) read by antidiagonals: T(n,k) = 2^(n-1) * ((k+1)*n - 2k) + k + 1. 11
1, 2, 1, 5, 2, 1, 13, 6, 2, 1, 33, 18, 7, 2, 1, 81, 50, 23, 8, 2, 1, 193, 130, 67, 28, 9, 2, 1, 449, 322, 179, 84, 33, 10, 2, 1, 1025, 770, 451, 228, 101, 38, 11, 2, 1, 2305, 1794, 1091, 580, 277, 118, 43, 12, 2, 1, 5121, 4098, 2563, 1412, 709 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

n-th difference of (T(k,n),T(k,n-1),...,T(k,0)) is 1+(n-1)*(k+1), for n=1,2,3,...; k=0,1,2,...

LINKS

Table of n, a(n) for n=0..59.

EXAMPLE

Diagonals: {1}; {2,1}; {5,2,1}; ...

CROSSREFS

Row 1 = (1, 2, 5, 13, 33, ...) = A005183.

Sequence in context: A126075 A134032 A137151 * A047848 A275431 A281348

Adjacent sequences:  A048491 A048492 A048493 * A048495 A048496 A048497

KEYWORD

nonn,tabl

AUTHOR

Clark Kimberling

EXTENSIONS

Formula from Ralf Stephan, Jan 15 2004

STATUS

approved

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Last modified September 20 12:42 EDT 2018. Contains 315239 sequences. (Running on oeis4.)