cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-3 of 3 results.

A201221 The smallest number of previous terms of sequence A008829 which are required to sum to A008829(n).

Original entry on oeis.org

4, 6, 8, 10, 12, 14, 16, 16, 19, 16, 18, 17, 19, 18, 28, 34, 72, 49, 57, 35, 51, 36, 97, 65, 56, 56, 57, 69, 64, 65, 219, 136, 96, 72, 79, 75, 78, 74, 78, 70, 72, 73
Offset: 2

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Author

Alastair Stanley, Nov 30 2011

Keywords

Examples

			For n=2, the corresponding term of A008829 is 4, and the only preceding term is 1, therefore four 1s are needed and term a(2)=4.
Likewise, for n=3, the corresponding term is 15, which is three 4s and three 1s, so term a(3)=6.
		

Crossrefs

Cf. A008829.

Extensions

More terms from Alastair Stanley, Nov 29 2018

A016062 Write down decimal expansion of Pi; divide up into chunks of minimal length so that chunks are increasing numbers and do not begin with 0.

Original entry on oeis.org

3, 14, 15, 92, 653, 5897, 9323, 84626, 433832, 795028, 841971, 6939937, 51058209, 74944592, 307816406, 2862089986, 28034825342, 1170679821480, 8651328230664, 70938446095505, 82231725359408, 128481117450284, 1027019385211055, 59644622948954930, 381964428810975665, 933446128475648233
Offset: 1

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Author

Keywords

Comments

"Slices of pi" sequence. - Michael Joseph Halm, Aug 02 2002

Examples

			Pi = 3.14159265358979323846264338327950288419716939937510582...
		

Crossrefs

Programs

  • PARI
    default(realprecision,1000);P=Pi;until(P-=L=P\1,print1(L",");while((L>P*=10)||frac(P)<.1,)) \\ Note: The last line of printed values may not be accurate, double-check with higher precision. - M. F. Hasler, May 11 2015

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), Oct 04 2001
Some more terms from M. F. Hasler, May 11 2015
Offset changed to 1 by Sean A. Irvine, Jan 02 2019

A322920 Smallest number a(n) formed from consecutive sequences of digits of Pi and satisfying a(n) > Sum_{i=1..n-1} a(i); first 3 is omitted.

Original entry on oeis.org

1, 4, 15, 92, 653, 5897, 9323, 84626, 433832, 795028, 8419716, 939937510, 5820974944, 59230781640, 628620899862, 803482534211, 7067982148086, 51328230664709, 384460955058223, 1725359408128481, 11745028410270193, 85211055596446229
Offset: 1

Views

Author

Alastair Stanley, Dec 31 2018

Keywords

Examples

			The first few terms are the same as those of A008829. The first deviation from A008829 occurs at the 11th term: a(11) = 8419716. Although 841971 is larger than a(10) = 795028 it is smaller than the sum of the first 10 terms = 1329471.
		

Crossrefs

Cf. A008829.
Showing 1-3 of 3 results.