A078275 - cp's OEIS frontend

A078275 a(n) is the number from which if odd-positioned digits are deleted then one gets the concatenation of first n even numbers, while if even-positioned digits are deleted then one gets reverse concatenation of first n even numbers. Position of least significant digit is considered to be 1.

n	a(n)
1	22
2	2442
3	264462
4	28466482
5	214068861402
6	2142618018061422
7	21446182110018261442
8	214661841102112018461462
9	2148618611041122114018661482
10	22406188110611241142116018862402
11	224262801108112611441162118028062422
12	2244628212001128114611641182210028262442

[22, 2442, 264462, 28466482, 214068861402, 2142618018061422, 21446182110018261442, 214661841102112018461462, 2148618611041122114018661482, 22406188110611241142116018862402, 224262801108112611441162118028062422, 2244628212001128114611641182210028262442]

cp's OEIS Frontend

A078275 a(n) is the number from which if odd-positioned digits are deleted then one gets the concatenation of first n even numbers, while if even-positioned digits are deleted then one gets reverse concatenation of first n even numbers. Position of least significant digit is considered to be 1.

Table of values

List of values