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A072452 a(n) = reversal(a(n-1)+n) for n>0, a(0) = 0. 1
0, 1, 3, 6, 1, 6, 21, 82, 9, 81, 19, 3, 51, 46, 6, 12, 82, 99, 711, 37, 75, 69, 19, 24, 84, 901, 729, 657, 586, 516, 645, 676, 807, 48, 28, 36, 27, 46, 48, 78, 811, 258, 3, 64, 801, 648, 496, 345, 393, 244, 492, 345, 793, 648, 207, 262, 813, 78, 631, 96, 651, 217, 972 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 0..10000

Nick Hobson, Python program for this sequence

EXAMPLE

a(10)=19 given: a(11) = rev(a(10)+11) = rev(19+11) = rev(30) = 3; a(12) = rev(a(11)+12) = rev(3+12) = rev(15) = 51.

PROG

(Python) See Hobson link.

(Haskell)

a072452 n = a072452_list !! n

a072452_list = 0 : map a004086 (zipWith (+) a072452_list [1..])

-- Reinhard Zumkeller, Feb 09 2012

CROSSREFS

Cf. A004086.

Sequence in context: A091068 A065233 A243658 * A155830 A096602 A288853

Adjacent sequences:  A072449 A072450 A072451 * A072453 A072454 A072455

KEYWORD

nonn,base,look

AUTHOR

Reinhard Zumkeller, Aug 02 2002

STATUS

approved

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Last modified October 23 08:57 EDT 2019. Contains 328345 sequences. (Running on oeis4.)