A396107 Recamán transform of the running sum of the decimal digits of Pi (A046974).

0, 3, 7, 15, 6, 20, 43, 18, 49, 13, 52, 8, 60, 121, 53, 130, 50, 132, 47, 140, 237, 134, 29, 140, 25, 143, 22, 151, 19, 153, 12, 162, 317, 472, 315, 150, 323, 146, 324, 137, 331, 136, 337, 127, 340, 118, 349, 115, 356, 110, 357, 604, 352, 92, 354, 616, 345, 67

Offset

0,2

Comments

The 20 smallest numbers not occurring in the first million terms: 5, 9, 11, 21, 28, 31, 40, 41, 59, 61, 62, 64, 65, 68, 74, 76, 78, 79, 80, 81.

Links

Ruud H.G. van Tol, Table of n, a(n) for n = 0..10000

Prog

(PARI) first(nn)= localprec(nn+20); my(d=digits(Pi*10^nn\1), r=List(0), k=0, s=0, t=0); for(n=1, nn-1, k+=d[n]; s=bitor(s, 1<<(t+=if(t<=k||bittest(s, t-k), k, -k))); listput(~r, t)); Vec(r);

Crossrefs

Cf. A005132, A046974, A064365.

Sequence in context: A348872 A114396 A348483 * A333556 A334782 A102032

Adjacent sequences: A396104 A396105 A396106 * A396109 A396111 A396114

Keyword

nonn,base,easy,look

Author

Ruud H.G. van Tol, May 17 2026

Status

approved