A258640 Whole number sieve of square root of 2.

1, 3, 4, 8, 9, 80, 9, 69, 0, 7, 7, 8, 2, 0, 5, 3, 7, 0, 9, 0, 8, 37, 4, 0, 55, 75, 99, 50, 7, 0, 5, 97, 27, 9, 1, 9, 8, 55, 9, 48, 87, 2, 8, 36, 95, 79, 25, 3, 88, 20, 5, 47, 8, 6, 37, 70, 54, 60, 8, 8, 60, 4, 50, 0, 5, 2, 6, 0, 7, 130, 18, 86, 2, 34

Offset

1,2

Links

Manfred Scheucher, Table of n, a(n) for n = 1..544

Manfred Scheucher, Sage Script

Example

Find the first occurrence of 0 (the first whole number) in the digits of sqrt(2) (only 35 digits in this illustration):
14142135623730950488016887242096980..., and replace it with a space:
1414213562373 950488016887242096980...  Repeat the process with the next whole number, 1:
414213562373 950488016887242096980...  Then 2:
414 13562373 950488016887242096980...  Then 3:
414 1 562373 950488016887242096980...  Then 4,5,6,7, etc., until the first occurrence of every counting number is eliminated from the digits of sqrt(2).
     1      3    4     8      9    ...  Then consolidate gaps between the remaining digits into a single comma:
1,3,4,8,9,80,9,69,0,7,7,8,2,0,5,3, ...  to produce the first terms in the whole number sieve of sqrt(2).

Crossrefs

Cf. A002193, A248831, A247747, A257835, A258481.

Sequence in context: A320355 A113057 A253606 * A345223 A185726 A152520

Adjacent sequences: A258637 A258638 A258639 * A258641 A258642 A258643

Keyword

nonn,base

Author

Manfred Scheucher, Jun 06 2015

Status

approved