A136517 a(0) = 3; for n > 0, break up decimal expansion of Pi into chunks of increasing lengths; leading zeros are not printed.

3, 1, 41, 592, 6535, 89793, 238462, 6433832, 79502884, 197169399, 3751058209, 74944592307, 816406286208, 9986280348253, 42117067982148, 86513282306647, 938446095505822, 31725359408128481, 117450284102701938, 5211055596446229489

Offset

0,1

References

Sylvia Nasar, A Beautiful Mind (1998), p. 210.

Clifford A. Pickover, A Passion for Mathematics, Wiley, 2005; see p. 64.

Links

Nathaniel Johnston, Table of n, a(n) for n = 0..500

Maple

with(StringTools): lim:=23: s:=convert(evalf[lim^2](Pi-3), string): printf("3, "): for n from 1 to lim do printf("%d, ", parse(SubString(s, (n-1)*n/2+2..n*(n+1)/2+1))); od: # Nathaniel Johnston, May 08 2011

Mathematica

Join[{3}, FromDigits/@With[{p=RealDigits[Pi, 10, 220][[1]]}, Table[ Take[ p, {(n(n-1))/2+2, (n(n-1))/2+1+n}], {n, 20}]]] (* Harvey P. Dale, Aug 20 2011 *)

Crossrefs

Cf. A000796, A081368, A090897.

Sequence in context: A307803 A356819 A362166 * A366479 A104097 A344379

Adjacent sequences: A136514 A136515 A136516 * A136518 A136519 A136520

Keyword

nonn,base,easy

Author

N. J. A. Sloane, Apr 21 2008

Extensions

Extended by Nathaniel Johnston, May 08 2011

Status

approved