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A361227
Irregular triangle T(n, k), n > 0, k = 0..A007814(n), read by rows: T(n, k) = Sum_{i = n-2^k+1..n} A361144(i).
2
1, 2, 3, 4, 5, 9, 12, 6, 7, 13, 8, 10, 18, 31, 43, 11, 14, 25, 15, 17, 32, 57, 16, 19, 35, 20, 21, 41, 76, 133, 176, 22, 23, 45, 24, 26, 50, 95, 27, 28, 55, 29, 30, 59, 114, 209, 33, 34, 67, 36, 37, 73, 140, 38, 39, 77, 40, 42, 82, 159, 299, 508, 684, 44, 46, 90
OFFSET
1,2
COMMENTS
This sequence gives the sums underlying A361144: the n-th row corresponds to the sums where A361144(n) is the last term.
Each integer appears once in this sequence.
FORMULA
T(n, 0) = A361144(n).
EXAMPLE
Triangle T(n, k) begins:
n n-th row
-- ----------------
1 1
2 2, 3
3 4
4 5, 9, 12
5 6
6 7, 13
7 8
8 10, 18, 31, 43
9 11
10 14, 25
11 15
12 17, 32, 57
PROG
(C++) See Links section.
CROSSREFS
Sequence in context: A362025 A093305 A065817 * A084542 A038201 A033084
KEYWORD
nonn,tabf
AUTHOR
Rémy Sigrist, Mar 05 2023
STATUS
approved