A276463 Position at which n first appears in A276457, with a(0)=0.

0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 120, 160, 158, 140, 337, 171, 189, 207, 165, 248, 230, 263, 122, 124, 126, 128, 130, 132, 134, 136, 138, 244, 757, 142, 144, 146, 148, 150, 152, 154, 156, 374, 725, 399, 279, 291, 556, 295, 423, 167, 169, 502, 429, 173, 175, 177, 179, 181, 183, 185, 187, 496, 508, 191, 193, 195, 197

Offset

0,2

Comments

The conjecture is that every number will appear in A276457, so this sequence should be infinite.

1187 doesn't appear in the first 100000 terms of A276457, thus the b-file ends with 1186.

The first 11 terms are successive even numbers (A005843).

Links

Yuriy Sibirmovsky, Table of n, a(n) for n = 0..1186

Mathematica

Nm=1000;
Aa=Table[0, {j, 1, Nm}];
Aa[[3]]=1;
Do[B=Table[IntegerDigits[Aa[[l]]], {l, 1, j-1}];
Aa[[j+1]]=SequenceCount[Flatten[B], IntegerDigits[Aa[[j]]]], {j, 3, Nm-1}];
Table[Position[Aa, k][[1]]-1, {k, 0, 50}]

Crossrefs

Cf. A276457, A005843.

Sequence in context: A344453 A344450 A240714 * A187350 A118070 A329836

Adjacent sequences: A276460 A276461 A276462 * A276464 A276465 A276466

Keyword

nonn,base

Author

Yuriy Sibirmovsky, Sep 04 2016

Status

approved