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A084854 Triangular array, read by rows: T(n,k) = concatenated decimal representations of n and k, 1<=k<=n. 6
11, 21, 22, 31, 32, 33, 41, 42, 43, 44, 51, 52, 53, 54, 55, 61, 62, 63, 64, 65, 66, 71, 72, 73, 74, 75, 76, 77, 81, 82, 83, 84, 85, 86, 87, 88, 91, 92, 93, 94, 95, 96, 97, 98, 99, 101, 102, 103, 104, 105, 106, 107, 108, 109, 1010, 111, 112, 113, 114, 115, 116, 117, 118, 119, 1110, 1111 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
T(n, k) = n*10^A055642(k) + k.
T(n, 1) = A017281(n); T(n, n) = A020338(n).
PROG
(Python)
def T(n, k): return int(str(n) + str(k))
def auptorow(maxrow):
return [T(n, k) for n in range(1, maxrow+1) for k in range(1, n+1)]
print(auptorow(11)) # Michael S. Branicky, Nov 21 2021
CROSSREFS
Sequence in context: A096312 A031032 A279769 * A108237 A084906 A232184
KEYWORD
nonn,base,tabl
AUTHOR
Reinhard Zumkeller, Jun 09 2003
STATUS
approved

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Last modified March 28 14:13 EDT 2024. Contains 371254 sequences. (Running on oeis4.)