A114645 -id:A114645 - cp's OEIS frontend

A114804 The numbers 3^n-1 written in groups of three digits, with leading zeros omitted.

282, 680, 242, 728, 218, 665, 601, 968, 259, 48, 177, 146, 531, 440, 159, 432, 247, 829, 681, 434, 890, 643, 46, 720, 129, 140, 162, 387, 420, 488, 116, 226, 146, 634, 867, 844, 1, 46, 35, 320, 231, 381, 59, 608, 941, 431, 788, 262, 824, 295, 364, 808

Offset: 1

Jonathan Vos Post, Feb 18 2006

			2, 8, 26, 80, 242, 728, 2186, ...

Harvey P. Dale, Table of n, a(n) for n = 1..10000

Cf. A024023, A114645, A114807, A114808.

FromDigits/@Partition[Flatten[IntegerDigits/@(3^Range[30]-1)],3] (* Harvey P. Dale, Jul 04 2021 *)

Terms recomputed to use the definition equivalent to A114645. - R. J. Mathar, Jun 23 2014

A114807 The numbers 4^n-1 written in groups of three digits, with leading zeros omitted.

Original entry on oeis.org

315, 632, 551, 23, 409, 516, 383, 655, 352, 621, 431, 48, 575, 419, 430, 316, 777, 215, 671, 88, 632, 684, 354, 551, 73, 741, 823, 429, 496, 729, 517, 179, 869, 183, 687, 194, 767, 352, 748, 779, 69, 431, 99, 511, 627, 775, 439, 804, 651, 110, 317, 592, 186, 44

Offset: 1

Jonathan Vos Post, Feb 19 2006

			3, 15, 63, 255, 1023, 4095, 16383, ...

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Cf. A114645, A114804, A114808, A114827.

FromDigits[#] & /@ Partition[ Flatten@ IntegerDigits@ Table[4^n - 1, {n, 22}], 3] (* Robert G. Wilson v, Jun 23 2014 *)
FromDigits/@Partition[Flatten[IntegerDigits/@(4^Range[30]-1)],3] (* Harvey P. Dale, Jun 03 2025 *)

from itertools import count, islice
def bgen(): yield from (d for n in count(1) for d in str((1 << 2*n)-1))
def agen(): g = bgen(); yield from (int("".join(t)) for t in zip(g, g, g))
print(list(islice(agen(), 54))) # Michael S. Branicky, Dec 25 2022

a(4) and following changed by Georg Fischer, Dec 25 2022

A114808 The numbers 5^n-1 written in groups of three digits, with leading zeros omitted.

Original entry on oeis.org

424, 124, 624, 312, 415, 624, 781, 243, 906, 241, 953, 124, 976, 562, 448, 828, 124, 244, 140, 624, 122, 70, 312, 461, 35, 156, 243, 51, 757, 812, 415, 258, 789, 62, 476, 293, 945, 312, 438, 146, 972, 656, 241, 907, 348, 632, 812, 495, 367, 431, 640, 624, 476, 837, 158, 203, 124, 238, 418, 579

Offset: 1

Jonathan Vos Post, Feb 19 2006

			4, 24, 124, 624, 3124, 15624, ...

Cf. A024049, A103455, A114645.

L := [] ;
for n from 1 to 30 do
    dggs := ListTools[Reverse](convert(5^n-1,base,10) );
    L := [op(L),op(dggs)] ;
end do:
for k from 1 to nops(L)-3 by 3 do
    op(k,L)*100+op(k+1,L)*10+op(k+2,L) ;
    printf("%d,",%) ;
end do: # R. J. Mathar, Jun 23 2014

FromDigits[#] & /@ Partition[ Flatten@ IntegerDigits@ Table[5^n - 1, {n, 22}], 3] (* Robert G. Wilson v, Jun 23 2014 *)

Definition and terms realigned with A114645 by Robert G. Wilson v, Jun 23 2014

A114827 The numbers 7^n-1 written in groups of three digits, with leading zeros omitted.

Original entry on oeis.org

648, 342, 240, 16, 806, 117, 648, 823, 542, 576, 480, 40, 353, 606, 282, 475, 248, 197, 732, 674, 213, 841, 287, 200, 968, 890, 104, 66, 782, 230, 728, 484, 747, 561, 509, 942, 332, 329, 305, 696, 2, 326, 305, 139, 872, 61, 628, 413, 597, 910, 448, 113, 988

Offset: 1

Jonathan Vos Post, Feb 19 2006

			6, 48, 342, 2400, 16806, 117648, ...

Cf. A114645.

Terms recomputed to use the definition equivalent to A114645 by Alois P. Heinz, Jun 23 2014

cp's OEIS Frontend

A114804 The numbers 3^n-1 written in groups of three digits, with leading zeros omitted.

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A114807 The numbers 4^n-1 written in groups of three digits, with leading zeros omitted.

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A114808 The numbers 5^n-1 written in groups of three digits, with leading zeros omitted.

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A114827 The numbers 7^n-1 written in groups of three digits, with leading zeros omitted.

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